Which of these is the most likely contributor to "acid rain"?
a) cars that run on gasoline
b) ranches that raise cattle
c) erosion from deforestation
d) power plants that burn coal

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper

Which of these is a constitutional duty of the lieutenant governor of the state of georgia

In a small, closed economy, national income (gdp) is $350 million for the current year. individuals have spent $100 million on the consumption of goods and services. they have paid a total of $60 million in taxes and the government has spent $75 million on goods and services this year. use this information and the national income identity to answer the questions. how much does the economy spend on investment?